Gas Question, What effect?

I have a little better than 10.5 to 1 compression with my LA/Magnum hybred. I don't have any pinging with 16 init and 34 total timing running 91 octane. What I am wondering is, what effect would running 100 or even 112 octane race gas have on power? I'm not worried about fuel milage as the diffence in price would more than eat up any mileage savings.

Jack